Used for alarm indication and
monitoring on Fume Hoods
05/03/04
1
OPERATOR DISPLAY PANEL
Velocity Bar Graph or
Alarm Time Line
Velocity display fpm or m/sec
LED indicators
Function and up/down buttons
for Menu Configuration and
Calibration.
ENTER – also used as
Mute button for audible alarm
Note :- Access to the Calibration and Configuration menus is password protected and is factory
set. To access and or change the password contact the supplier for the Engineers Password and
enter the Passwords in the Main Menu or alternatively use a Laptop connected to the Com port
and the Upload/Download software provided
2
Connection details :-
V
OUTPUT
RELAY
R1
RS 232
ComPort
IDC
14-way
Connector
for remote
Interface Box
( Optional )
SM6 or Inline
Airflow Sensor
Flying lead with RJ11
plug connection for PCB
and SM6 airflow sensor
12V DC
Notes :-
1. The Remote Interface Box is an optional extra. This is supplied
complete with a 2m long ribbon cable with IDC plugs. The box is
designed to allow termination of external cables rated at 220V and
includes the following connection points :-
2. Output 1 is an optional extra output giving a 0 –10 V DC signal
proportional to the Fume Hood face velocity over the range
of 0 – 200 fpm
TEL
MADE IN ENGLAND
www.tel-uk.com
AFA 1000 USA
SENSOR
REFER TO
INSTALLATION
INSTRUCTIONS
BEFORE
CONNECTING
Sash High
Proximity switch
( Optional )
0-10
OUTPUT
1
INPUT
Blu
Blk
Brn
Flying lead with plug
connection for PCB
15 V DC
Sash High
Micro - switch
( Optional )
120V
PSU
s/w
-
INPUT 3
+
INPUT 2
INPUT 1
15V DC
POWER
SUPPLY
120V / 15V DC
Plug – in power
adapter for 120V
socket
3
1.1 General Description
All systems comprise of the following components :-
1 – SM6 Airflow Sensor,
1 – AFA1000 /1 Alarm unit,
1 – AC power supply
If the Sash Alarm System option is included there will also be a sash micro switch or proximity
switch.
Operator Features
--- the alarm has the following operator features :-
Digital Display
The digital display is a back-lit, full graphic unit with a visual display of approx 56 x 27 mm.
The display operates through the software allowing the generation of figures, wording and Icons.
The display shows the fume cupboard face velocity in m/sec or fpm when enabled or the
alternative with no velocity reading but showing AIR FAIL / AIR SAFE as continuous display.
All of the above are configurable via the alarm key pad.
An ‘ event time line ’ segmented into 20 x 3 minute segments will scroll across the display
( when enabled) .This takes the form of a graphical ‘ blip’ that will progress from the right hand
side to the left hand side – representing events that have occurred during the past hour. On the
standard alarm this will be limited to airflow alarms but other alarms are available.
Using the diagnostics software and an associated computer via the com port on the alarm the
event data can be transferred to a data logger.
The alternative to the event time line is a dynamic ‘ bar graph ’ representing the face velocity
The display shows a Horn icon ( with line through it ) when the audible alarm is in the Muted
condition
Sash High – will be displayed when the Sash alarm is enabled and the sash is raised above
the max safe working opening.
This display will alternate on/off with the velocity reading.
Ext Alarm – will be displayed when the external alarm input is activated ( when enabled )
This display will alternate on/off with the velocity reading
Air Fail - will be displayed if the airflow is less than the Low air alarm point.
This display will alternate on/off with the velocity reading
High Air - will be displayed if the airflow is more than the High air alarm point.
This display will alternate on/off with the velocity reading
Set-back - will be displayed if the night set-back function is activated ( when enabled )
This display will alternate on/off with the velocity reading
Disabled - will be displayed if the alarm disable function is activated ( when enabled )
This display will alternate on/off with the velocity reading
4
LED Indicators ---- the alarm unit has three LED indicators : Red -- Alarm
Amber -- Caution
Green -- Safe
Audible Alarm sounder
Mute facility
Enter
--- the alarm has an Enter button -- this is multi-functional as follows : Press Enter momentarily when alarm is sounding will mute the alarm
Press Enter for 5 secs will gain access to Calibration and Configuration
menus ( both menus password protected )
-- the alarm has an audible alarm sounder with local or remote
+ / - -- the alarm has + / - buttons that can be used to scroll through the calibration and
configuration menu or to select options or values
External Connections
Input 1 --- volt free relay input configurable for normally closed or normally open relays
This input can be configured as : Alarm disable
Night set-back
External alarm
Sash High
High / Low
Input 2 --- volt free relay input configurable for normally closed or normally open relays
This input can be configured as : Alarm disable
Night set-back
External alarm
Sash High
High / Low
Input 3 --- volt free relay input configurable for normally closed or normally open relays
This input can be configured as : Alarm disable
Night set-back
External alarm
Sash High
High / Low
-- the alarm unit will have the following connection points :-
5
Output 1 --- volt free relay output configurable as normally closed or normally open relays.
Output 2 --- volt free relay output configurable as normally closed or normally open relays.
Output 3 --- volt free relay output configurable as normally closed or normally open relays.
Com Port --- to enable connection to Laptop or PC for full diagnostics , logging or setting
up and for communications to building computer system ( BMS)
Power supply --- low voltage DC power supply
Airflow Sensor --- connection socket for the face velocity airflow sensor.
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